Home / 20,129.69-27,778.86-11,055.23

Finding the Fourth Proportional to 20,129.69, 27,778.86 and 11,055.23

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Solution

The fourth proportional to 20,129.69, 27,778.86 and 11,055.23 is: 15,256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.69 : 27,778.86 = 11,055.23 : x
  2. Step 2: Convert to fraction form
    20,129.69/27,778.86 = 11,055.23/x
  3. Step 3: Cross multiply
    20,129.69x = 27,778.86 × 11,055.23
  4. Step 4: Simplify right side
    20,129.69x = 307,101,547.54
  5. Step 5: Solve for x
    x = 307,101,547.54/20,129.69
  6. Step 6: Final answer
    x = 15,256.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.